During a keynote at Oracle Industry Connect, Sprint’s CEO Dan Hesse took the stage to talk network plans. You may remember Sprint’s HD Voice which, after it became available in a few select markets like Kansas City, was supposed to have fully rolled out to the rest of the country by the end of last year.

What ever the reason for the delays, Hesse told the crowd that HD Voice was still Sprint’s “killer app,” now promising to deliver the service to the entire country by the first of July. If the name wasn’t any clue, HD Voice improves the clarity of voice calls by increasing the octave range from 4, to a full 7 octaves in compatible handsets.

It doesn’t sounds like a big deal, but it’s an improvement that’s seemingly fallen to the wayside as operators chase broadband-like data speeds. Maybe we’ll actually start using our smartphones again to make actual phone calls.

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